Alula RE215 Carbon Monoxide Detector User Manual
Resolution Products, Inc. Carbon Monoxide Detector
  
    Alula   >  
User Manual

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CO Alarm is a life-safety device that 
alarms when it detects carbon 
monoxide.
Features
•  UL2034 and CSA 6.19-01 listings
•  Detects carbon monoxide
•  5 year warranty
Key Instructions
1. Review sections 1 and 2 for 
information regarding the CO alarm.
2. Determine where to place the CO 
alarms per Section 3.
3. Install per Section 4.
Cryptix Enrolment:
4. Enroll the CO alarm into the panel:
•  Place panel in enrollment mode
• Press and hold TEST button until you 
hear the sounder beep
•  The panel will learn the CO alarm
•  Press and hold TEST button until 
sounder is done sounding beeps
•  Panel will indicate a CO Test by 
sounding temporal 4 siren one time
Interlogix Compatible Enrollment
•  Place panel in enrollment mode
•  Press and hold TEST button until 
sounder is done sounding beeps
•  Panel will learn the CO alarm- 
recommended group 34
•  Test that the CO alarm is enrolled in 
the panel:
•  Put panel into test mode 
• Press and hold TEST button until 
sounder is done sounding beeps
• Panel will indicate a CO sensor has 
tripped
Attention  
This manual should be read prior to use and retained for further information.
Use the Helix installation guide to verify proper system setup.
CO Alarm
CARBON
MONOXIDE
ALARM
ALARM
FAULT
POWER
Red
Light
Amber
Light
Green
Light
Test
Button

•  Panel will learn the CO alarm
•  Recommended group is 81
•  Test that the CO alarm is 
enrolled in the panel
•  Put panel into test mode
•  Press and hold TEST button until 
sounder is done sounding beeps
•  Panel will indicate a CO sensor 
has tripped
5. Test that the CO alarm is enrolled 
in   the panel.
6. Review Section 5 for CO alarm 
testing and maintenance.
• Test the functionality of the CO 
alarm   weekly.
7. Review Sections 6 and 7 for 
information regarding what to 
do when the alarm sounds and 
information regarding how to 
protect your family.
8. Review how to have your alarm 
serviced per Section 8.
9. For troubleshooting information, 
refer to Section 9.
1. Read This First
Congratulations on becoming the owner 
of a carbon monoxide alarm. This will 
help protect you and your household 
from the dangerous effects of carbon 
monoxide - the silent killer. 
• Wait 15 seconds after connecting 
the power before button testing. We 
recommend you:
• Install a CO alarm in every room that 
contains a fuel burning appliance, 
particularly rooms where people spend 
a lot of time, such as bedrooms, 
kitchens, etc.
• In rooms with an appliance, install 
(preferably) on the ceiling (300mm 
from walls) and between 1.5m to 3m 
horizontally away from the appliance. 
In rooms remote from the appliance, 
install at ‘head height’, where the light 
indicators can be seen.
Honeywell Compatible Enrollment
•  Place panel in enrollment mode
•  Zone type= Carbon Monoxide
•  Input type= Supervised RF 
Transmitter
•  When asked for a serial number: 
trip tamper twice
•  To tamper, turn base counter-
clockwise. Wait for two seconds 
and restore the base. Wait for 
three seconds and repeat steps.
•  Select Loop 1 for CO
•  Put panel into test mode
•  Press and hold TEST button until 
sounder is done sounding beeps
•  Panel will indicate a CO sensor 
has tripped
2GIG Compatible Enrollment
•  Place panel in enrollment mode
•  Q1: Select RF sensor number 
(01-48) zone number of your 
choice
•  Select RF sensor type [14] 24 
hour carbon monoxide (see 
control panel installation manual)
•  Select RF sensor equip type [1]
•  Select RF sensor equip code 
[0860] CO1-345 CO detector
•  Select RF sensor serial number 
and press shift, press learn trip 
sensor
•  Select RF sensor age [1] New
•  Select RF sensor Loop number 
[1]
•  Put panel into test mode
•  Press and hold TEST button until 
sounder is done sounding beeps
•  Panel will indicate a CO sensor 
has tripped 
DSC Compatible Enrollment
•  Place panel in enrollment mode
• Press and hold TEST button until 
sounder is done sounding beeps
2

• Test the alarm weekly by pressing the 
test/hush button. The horn will sound at 
a diminished sound output level initially 
and then quickly reach maximum sound 
output level.
• Replace alarm after approximately 10 
years operation (see ‘replace by’ date 
on label).
• Do not install alarm until all building work 
is completed to avoid contamination.
• Individuals with medical problems may 
consider warning devices which provide 
audible and visual signals for carbon 
monoxide concentrations under 30ppm.
2.  Carbon Monoxide - The 
Silent Killer
2.1 What is carbon monoxide?
Many people are killed each year, and 
many more suffer ill health from carbon 
monoxide (CO) poisoning. CO is an 
invisible, odorless, tasteless and extremely 
toxic gas. It is produced by appliances and 
vehicles burning fuels, such as coal, oil, 
natural/bottled gas, paraffin, wood, petrol, 
diesel, charcoal, etc. CO is absorbed by 
red blood cells in the lungs in preference 
to oxygen - this results in rapid damage 
to the heart and brain from oxygen 
starvation.
High levels of CO in a house can be 
caused by:
• Incorrectly or poorly installed fuel-burning 
appliances
• Blocked or cracked chimneys/flues
• Blocked vents or draft-proofing 
which makes areas with fuel-burning 
appliances or fireplaces airtight
• Engines of cars, lawnmowers, etc. left 
running in confined spaces
• Portable paraffin or gas heaters in badly 
ventilated rooms
2.2 What happens when your CO Alarm 
detects Carbon Monoxide?
When the Alarm detects potentially 
dangerous levels of CO, it flashes the red 
alarm light immediately and then sounds 
a loud alarm if the CO persists. Table 
B shows how the CO Alarm reacts to 
different levels of CO gas and  exposure 
time. At higher levels of CO the alarm 
turns on sooner. The rate of flashing of 
the red light indicates the level of CO. 
If your CO Alarm sounds, follow the 
instructions in Section 6. NEVER IGNORE 
THE ALARM!
3
2.3 Symptoms of CO Poisoning
CO in 
PPM
Symptoms
35 The maximum allowable 
concentration exposure 
in any 8 hour period 
according to OSHA
150 Slight headache after 1.5 
hours
200 Slight headache, fatigue, 
dizziness, nausea after 2-3 
hours
400 Frontal headaches 
within 1-2 hours, life 
threatening after 3 hours, 
also maximum parts per     
million in ue gas (on an 
air free basis) according 
to US Environmental  
Protection  Agency.
800 Dizziness, nausea and 
convulsions within 45 
minutes. Unconsciousness 
within 2 hours. Death within 
2-3 hours.
1600 Headache, dizziness, and 
nausea within 20 minutes. 
Death within 1 hour.
3200 Headache, dizziness and 
nausea within 5-10 minutes. 
Death within 25-30 minutes.
6400 Headache, dizziness and 
nausea within 1-2 minutes. 
Death within 10-15 minutes.
12800 Death within 1-3 minutes
The following symptoms may be related 
to Carbon Monoxide Poisoning and 
should be discussed with all members of 
the household:
Mild exposure: Headaches, running 
nose, sore eyes, often described as “flu 
like symptoms”
Medium Exposure: Dizziness, 
drowsiness, vomiting
Extreme Exposure: Unconsciousness, 
brain damage, death
Many cases of reported carbon 
monoxide poisoning indicate that while 
victims are aware they are not well, they 
become so disoriented they are unable 
to save themselves by either exiting the 
building or calling for assistance.

Pre-Alarm (before horn sounds): When 
the Alarm detects over 50 ppm CO, the 
red light flashes in accordance with Table 
B. This helps locate CO leaks as the unit 
gives an indication straight away.(Without 
this feature the CO level would need to 
be at 50 ppm CO for typically 72 minutes 
for an alarm sound to be given). Note: the 
pre-alarm signal may be triggered by CO 
coming for example, from cooking with 
gas, from car engines, or from nearby 
barbecues. This is usually not a concern, 
unless the pre-alarm signal persists until 
the alarm sounds and the CO source is 
unknown.
NOTE: The CO Alarm may sound if 
cigarette smoke is blown into it, or 
aerosols are released nearby.
CO ALARM MEMORY 
The CO Alarm memory is an important 
feature of the CO Alarm where even if 
the house is unoccupied during an alarm 
condition, it warns the homeowner that 
the unit has previously detected CO gas 
and been in alarm. The memory feature 
has two operation modes:
- memory indication for 24 hour period 
after alarm
- memory recall on demand 
24 hour memory indicators: After 
alarm, the RED light will flash at different 
rates every 50 seconds depending on 
the level of CO detected - see the CO 
Response Table.  
Memory recall on demand: To review 
the memory status after initial 24 hours, 
press and hold the test button. The red 
*OSHA Occupational Safety and 
Health Association
4
Table B: CO Alarm Response
CO 
Gas 
Level
Red Light Horn/ 
Sounder
0 - 30 
ppm
Off (unless 
it has 
alarmed 
previously)
Off
>50 
ppm
1 flash 
every 3 
seconds
On within 
60-240 
minutes 
(typically 90 
minutes)
>110 
ppm
2 flashes 
every 3 
seconds
On within 
10-50 
minutes 
(typically 30 
minutes)
>250 
ppm
3 flashes 
every 3 
seconds
On within 
4-15 minutes 
(typically 9 
minutes)
Condition Indicator
Pre Alarm Red LED flash only
CO Alarm Red LED flash + sounder
Faults Yellow LED flash + beeps
Alarm Indicators

people  sleep,  place  a  CO  Alarm  in  this        
room
- Locate a CO Alarm in a room containing 
a flueless or open-flued appliance, and
- Locate an Alarm in a room where the 
occupant(s) spend most of their time 
(e.g. sitting room)
- In a single room dwelling, the CO Alarm 
should be placed as far away from the 
cooking appliance as possible, but near 
to where the person sleeps
- If the appliance is in a room not normally 
used, such as a boiler room, the CO 
Alarm should be placed just outside the 
room so that the alarm will be heard 
more easily.
LED will flash in accordance to the CO 
Response Table. Display models will 
show the peak level of CO measured. 
Reset Memory: Hold down the test 
button until the red light stops and the 
green light starts flashing. Cover the horn 
with a cloth to muffle the alarm during this 
time. Please note that the memory will 
also be reset when the unit is switched 
off.
3. Where to Place CO Alarms
NATIONAL FIRE PROTECTION 
ASSOCIATION REQUIRED 
PROTECTION
For your information, the National Fire 
Protection Association’s Standard 720 
advises as follows:
Carbon Monoxide Alarms shall be 
installed as follows:
1. Outside of each separate dwelling unit 
sleeping area in the immediate vicinity of 
the bedroom. 
2. On every occupiable level of a dwelling 
unit, including basements but excluding 
attics and crawl spaces.
3. Other locations where required by 
applicable laws, codes or standards.
The equipment should be installed using 
wiring methods in accordance with the 
National Fire Protection Association’s 
Standard 72, 720. (National Fire 
Protection Association, Batterymarch 
Park, Quincy, MA 02269)
IMPORTANT!
Specific requirements for Carbon 
Monoxide Alarm installation vary from 
state to state and from region to region. 
Check with your local Fire Department for 
current requirements in your area.
3.1 Ideally a Carbon Monoxide Alarm 
should be installed in:
- Every room containing a fuel burning 
appliance
- Remote rooms where occupants spend 
a considerable amount of time
- Every bedroom
However, if the number of Carbon 
Monoxide Alarms to be fitted is limited, 
the following points should be considered 
when deciding where best to fit the 
Alarm(s):
- If there is an appliance in a room where 
5
Figure 2
    Location in room with sloped 
ceilings, the CO Alarm should be 
located at the high side of the room
CO Alarm
about
1 to 2m
Figure 1
Location in room with a 
fuel burning appliance
Figure 3 Position CO Alarm
12 inches
minimum
12 inches
minimum

3.2 Unsuitable Locations
Do not place the CO Alarm in any of the 
following areas:
1. In the immediate vicinity of a cooking 
appliance (keep it at least 1 meter 
horizontally from it).
2. Outside the building.
3. In an enclosed space (e.g. in or below 
a cupboard).
4. In a damp or humid area.
5. Directly above a sink or kitchen 
appliance.
6. Next to a door, window, air vent or 
anywhere that it would be affected by 
drafts.
7. Next to an extractor fan.
8. Over heat sources such as radiators or 
hot air vents.
9. Where it would be obstructed, e.g. by 
curtains or furniture.
10. In an area where the temperature 
could drop below 40°F (4.4°C) or rise 
above 100°F (37.8°C).
11. Where dirt or dust could block the 
sensor.
12. Where it could be easily knocked or 
damaged, or where it could be    
 accidentally turned off or removed.
13. In a bathroom or other areas where 
the CO Alarm may be exposed to water 
splashes, dripping or condensation (e.g. 
above an electric kettle).
14. Near paint, thinners, solvent fumes or    
air fresheners.
3.31 If locating the CO Alarm in a room 
with a fuel burning appliance 
(See Figure 1) 
• If it is mounted on a wall, it should be 
located at a height greater than the 
height of any door or window but still be 
at least 150mm from the ceiling.
• If it is mounted on the ceiling it should 
be at least 300mm from any wall or light 
fitting.
• The CO Alarm should be a horizontal 
distance of between 1.5m and 3m from 
the potential CO source.
• If there is a partition in the room, the CO 
Alarm should be located on the same 
side of the partition as the potential 
source.
• In rooms with sloped ceilings, the CO 
Alarm should be located at the high 
side of the room (see figure 2).
3.32 If locating the CO Alarm in a 
bedroom or in rooms remote from a 
fuel burning appliance (see figure 3)
Mount the CO Alarm relatively close to 
the breathing zone of the occupants. 
Whatever position is chosen make sure 
it is possible to view the three light 
indicators, when in the vicinity of the 
Alarm.
WARNING: A CO Alarm should not 
be used as a substitute for proper 
installation, use and maintenance 
of fuel-burning appliances, including 
appropriate ventilation and exhaust 
systems.
WARNING: Your CO Alarm is intended 
for use in ordinary indoor locations of 
family units. It is not designed to measure 
compliance with OSHA commercial or 
industrial standards.
4. Installation
4.1 Installation Procedure
1. Select a location complying with the 
advice in Section 3.
2. Remove the mounting plate from the 
packaging/Alarm.
3. Place the mounting plate on the 
ceiling/wall exactly where you want to 
mount the Alarm. With a pencil, mark the 
location of the two screw holes.
4. Taking care to avoid any electrical 
wiring in the ceiling, drill holes using a 
5.0mm drill bit through the center of the 
marked locations. Push the plastic screw 
anchors provided into the drilled holes. 
Screw the mounting plate to the ceiling/
wall. 
5. Alternatively, if desired, the CO Alarm 
will also free stand on a flat surface with 
6
300mm
CO Alarm
Figure 4
Location in bedrooms & other rooms 
remote from the appliance 
(at breathing level)

If necessary it is possible to further secure 
or tamper proof the Alarm by using a No.2 
or No.4 (2 to 3mm diameter - not supplied) 
self tapping screw 6 to 8mm long to firmly 
lock the Alarm and its mounting plate 
together (see figure 6C).
5. Testing and Maintenance
Testing
Frequent testing of the system is a 
requirement to ensure its continued and 
safe operation. To test the Alarm press  
and hold the test button. The Green LED 
will flash and the horn will ramp up to full 
sound to indicate the Alarm is operating 
correctly. Guidelines and best practices 
for testing are as follows:
1. After the system is installed
2. Once weekly thereafter
3. After prolonged absence from the     
dwelling (e.g. after a holiday period)
4. After repair or servicing of any of the 
systems elements or household electrical 
works
Silencing (Hush)
When the Alarm sounds after sensing 
CO, pressing the test/hush button will 
immediately stop the horn (the red 
light will continue to flash). If CO is still 
present, the red light and the horn will 
turn on again after about 4 minutes. The 
unit can only be silenced once during a 
CO incident. At levels > 300ppm CO, the 
unit cannot be silenced.
Monitoring
The CO alarm will self check (monitor) 
itself and give a status update every 50 
seconds if there are any problems. The 
status of the Alarm can also be checked 
on demand by using the test button. If the 
Alarms are indicating a fault, pressing the 
test button will silence the beeps for a 24 
hour period. This is for your convenience 
and can only be done once.
the mounting plate attached.
6. Ensure the RF module is fitted 
correctly into the base of the Alarm.
7. Remove the battery door and gently 
pull the battery tab and replace the 
battery door. 
8. Carefully line up the Alarm on the 
base, gently press home & twist on – see 
figure 4. (This connects the batteries). 
The red, amber & green lights will 
immediately flash in sequence to show 
they are working. 
9. Press the Test button (after 15 
seconds) to ensure that the Alarm works 
(see figure 5).
10. Install all the other Alarms similarly.
Figure 5
4.2 How to Tamperproof the Alarm
The Alarm can be made resistant to 
unauthorized removal. Break off the small 
pillar on the base as shown in figure 6A. 
To remove the Alarm from the ceiling it is  
necessary to use a small screwdriver to 
release the catch (push catch towards the 
ceiling) and then twist off the alarm (see 
figure 6B).
7
Figure 6C
Figure 6A
Figure 6B

Maintenance
Clean the outside case by occasionally 
wiping with a clean damp cloth. Do not 
use any cleaning agents, bleaches, 
detergents or polishes, including those 
in aerosol cans. Avoid spraying air 
fresheners, hair spray, paint or other 
aerosols near the CO Alarm. Do not 
place air fresheners near the unit. Use 
the narrow nozzle of a vacuum cleaner to 
remove fluff and other contamination 
from the cover slots and gas entry holes.
Caution: Do not paint the CO Alarm.
Remove the CO Alarm when decorating. 
Do not allow water or dust to contaminate 
the Alarm.
Warning: Do not open or tamper with the 
CO Alarm. There are no user serviceable 
parts inside and this can damage the 
Alarm.
Battery Replacement
Check the ‘Replace by’ label on the side 
wall - if it has been exceeded replace 
the entire unit. If the Replace by label 
on the side wall has not been exceeded, 
remove the Alarm from the mounting 
plate, remove the battery cover (see 
figure 7) and replace the batteries. Use 
only Duracell Alkaline MN2400BK AAA 
size batteries (obtainable from local 
retailers). Insert the new batteries with the 
orientation shown on the base. Replace 
the battery cover and replace the Alarm 
back on its mounting plate (this action 
automatically switches on the batteries). 
Button test the Alarm (after 15 seconds) to 
check the batteries are installed correctly 
and that they are not depleted.
Warning!
Constant exposures to high or low 
temperatures or high humidity may reduce 
battery life. Use only batteries specified 
in marking. Use of a different battery 
may have a detrimental effect on alarm 
operation. For environmentally sound 
disposal, remove the Alarm from its 
mounting plate 
Quick Test with Carbon Monoxide
The Carbon Monoxide Alarm checks 
for CO gas every 4 seconds and when 
exposed to the CO gas, the red light will 
flash (as per Table B) to confirm that it 
is detecting the CO gas. The Alarm can 
be tested with carbon monoxide gas by 
using one of the kits that comes with the 
gas either in a glass phial or aerosol can. 
Follow the instructions on the kit.
If a test gas kit is not readily available, it is 
also possible to gas test the Alarm using 
a joss stick or cigarette smoke. To do this, 
remove the Alarm from its base and slide 
the power switch to the ON position (see 
fig 8). Fill a suitable size plastic bag with 
smoke from the joss stick or cigarette. 
Insert the Alarm into the smoke filled bag 
and seal it closed. Within seconds, the red 
light will begin to flash (as per Table B) to 
confirm that the Alarm has detected the 
CO gas in the bag. To check the Alarm 
sound, momentarily press the test button 
and within seconds the horn will sound 
briefly. Slide the power switch to the OFF 
position and replace the Alarm on its 
mounting plate.
6. What to do when the alar
6. What to Do When the 
Alarm Sounds
Warning! Actuation of your CO Alarm 
indicates the presence of carbon 
monoxide (CO) which can KILL YOU. If 
an alarm signal sounds:
8
Figure 7
OFF
Position
ON
Position
Figure 8

these signs are present get the appliance 
checked out by an expert before further 
use. If family members are ill get medical 
help.
2. Choose all appliances and vehicles 
which burn fossil fuels such as coal, 
oil, natural/bottled gas, paraffin, wood, 
petrol, diesel, charcoal, etc. with care and 
have them professionally installed and 
regularly maintained.
3. These appliances must “breathe in” 
air to burn the fuel properly. Know where 
the air comes from and ensure vents/
air bricks, etc. remain unobstructed 
(particularly after building work).
4. The appliances must also “breathe 
out” the waste gases (including the CO) – 
usually through a flue or chimney. Ensure 
chimneys and flues are not blocked or 
leaking, and get them checked every 
year. Check for excessive rust or cracks 
on appliances and pipe work.
5. Never leave your car, motor bike or 
lawnmower engine running in the garage 
with the garage door closed. Never leave 
the door from the house to the garage 
open if the car is running.
6. Never adjust your own gas pilot lights.
7. Never use a gas cooker or a barbecue 
for home heating.
8. Children should be warned of the 
dangers of CO poisoning and instructed 
never to touch, or interfere with the CO 
Alarm. Do not allow small children to 
press the test/hush button as they could 
be subjected to excessive noise when the 
unit alarms.
9. Leaving windows or doors slightly 
open (even a few inches) will 
significantly reduce the risk of high 
levels of CO occurring. The high levels 
of draught-proofing in modern houses 
reduces ventilation and can allow 
dangerous gases to build up.
10. Install CO Alarms in all the areas 
recommended in this booklet.
11. Recognize that CO poisoning may be 
the cause when family members suffer 
from “flu-like” symptoms when at home 
but feel better when they are away for 
extended periods. 
8. Getting Your Alarm 
Serviced
If your CO Alarm fails to work after you 
have carefully read all the instructions, 
check that the unit has been installed 
correctly, and ensured that it has good 
1. Operate reset/ Silence button.
2. Call your emergency services Fire 
Department or 911.
3. Immediately move to fresh air – 
outdoors or by an open door/ window. Do 
a head count to check that all persons 
are accounted for. DO NOT re-enter the 
premises until the emergency services 
responders have arrived, the premises 
have been aired out and your Alarm 
remains in its normal condition. 
4. After following steps 1-3, if your Alarm 
reactivates within a 24 hour period, 
repeat steps 1-3 and call a qualified 
appliance technician to investigate 
for sources of CO from fuel burning 
equipment and appliances, and inspect 
for proper operation of this equipment. 
If problems are identified during this 
inspection have the equipment serviced 
immediately. Note any combustion 
equipment not inspected by the 
technician and consult the manufacturers’ 
instructions, or contact the manufacturer 
directly, for more information about CO 
safety and this equipment. Make sure 
that motor vehicles are not, and have not 
been, operating in an attached garage or 
adjacent to the residence.
Note: When ventilation is provided by 
leaving the window and doors open, the 
CO build up may have dissipated by 
the time help arrives and the Alarm may 
have stopped sounding. Although your 
problem may appear temporarily solved, 
it is crucial that the source of the CO 
is determined and appropriate repairs 
made.  7
7. How to Protect Your 
Family
Follow these guidelines to reduce the risk 
of Carbon Monoxide poisoning:
1. Know and look out for tell-tale signs  
that Carbon Monoxide may be present.
These include:
-The CO Alarm warning of abnormal 
levels.
-Staining, sooting or discoloration on or 
around appliances.
-A pilot light frequently going out.
-A strange smell when an appliance is 
operating.
-A naked gas flame which is yellow or 
orange, instead of the normal blue.
- Family members (including pets) 
exhibiting the “flu-like” symptoms of CO 
poisoning described above. If any of 
9

batteries connected. 
1. The CO Alarm will not work without 
good batteries. If the batteries have 
been drained, the Alarm will not give 
protection. Button test the Alarm weekly 
and on return from holidays and other 
long absences.
2. Carbon Monoxide must enter the 
unit for it to be detected. There may be 
Carbon Monoxide in other areas of the 
house but not in the vicinity of the CO 
Alarm. Doors, air drafts and obstructions 
can prevent the CO reaching the Alarm. 
For these reasons we recommend 
CO Alarms are fitted both near and in 
bedrooms, particularly if bedroom doors 
are closed at night. Additionally, install in 
rooms where members of the household 
spend much of their time, with potential 
sources of CO gas.
3. The CO Alarm may not be heard. The 
sound output is loud but it may not be 
heard behind a closed door or if it is too 
far away. RF interconnecting CO Alarms 
greatly improves the probability that they 
will be heard. The Alarm may not wake 
up somebody who has taken alcohol or 
drugs. The alarm sound may be masked 
by other sounds such as T.V., stereo, 
traffic noise, etc. Fitting CO Alarms on 
either side of closed doors will improve 
their chance of being heard. This CO 
Alarm is not designed for people with 
impaired hearing.
4. CO Alarms don’t last indefinitely. 
CO Alarms are sophisticated electronic 
devices with many parts. Although the 
Alarm and its component parts have 
undergone stringent tests, and are 
designed to be very reliable, it is possible 
that parts can fail. Therefore, you should 
test your CO Alarm weekly. The CO 
Alarm must be replaced after 10 years of 
operation.
5. CO Alarms are not a substitute for life 
insurance. Homeowners are responsible 
for their own insurance. The CO Alarm 
warns of increasing CO levels, but we 
do not guarantee that this will protect 
everyone from CO poisoning.
6. CO Alarms are not suitable as early 
warning Smoke Alarms. Some fires 
produce Carbon Monoxide, but the 
response characteristics of these CO 
Alarms are such that they would not give 
sufficient warning of fire. Smoke Alarms 
must be fitted to give early warning of 
fire.
7. The CO Alarm does not detect the 
presence of natural gas (methane), 
bottled gas (propane, butane) or other 
combustible gases. Fit combustion Gas 
Alarms to detect these. Note: Carbon 
Monoxide Alarms with electrochemical 
sensors have a cross sensitivity to 
hydrogen. This means that they can 
alarm due to sensing hydrogen being 
produced by batteries being incorrectly 
charged such as on boats or with battery 
back-up systems such as those used with 
alternative energy systems. The unit will 
alarm with 500 ppm H2 after between 10 
and 40 minutes exposure.
This CO Alarm is intended for residential 
use. It is not intended for use in industrial 
applications where Occupational Safety 
and Health Administration (OSHA) 
requirements for carbon monoxide 
detectors must be met.
This carbon monoxide alarming device 
is designed to detect carbon monoxide 
gas from ANY source of combustion. It is 
NOT designed to detect smoke, fire, or 
any other gases.
WARNING: THIS CO ALARM IS 
DESIGNED TO PROTECT INDIVIDUALS 
FROM THE ACUTE EFFECTS OF 
CARBON MONOXIDE EXPOSURE. 
IT WILL NOT FULLY SAFEGUARD 
INDIVIDUALS WITH SPECIFIC 
MEDICAL CONDITIONS. IF IN DOUBT, 
CONSULT A MEDICAL PRACTITIONER.
9. Troubleshooting
ALARM DOES NOT WORK WITH THE 
TEST BUTTON:
1. Wait 15 seconds after connecting the 
power before button testing.
2. Hold button down firmly for at least 5 
seconds.
3. Check that the Alarm is secured 
correctly on the mounting plate.
4. Replace batteries. 
ALARM SOUNDS FOR NO APPARENT 
REASON:
Follow the detailed instructions in Section  
Entitled “What to do when the alarm 
sounds” If there are still problems:
1. Ensure there are no fuel burning 
appliances in the vicinity which could 
be leaking CO gas (e.g. even from next 
door).
2. Ensure there are no fumes in the 
area (e.g. paint, thinners, hair spray, 
10

11
chemical cleaners, aerosol sprays, damp 
proofing done with an aqueous emulsion 
such as Aminofunctional Siloxane, and 
Alkylalkoxysilane.
3. Ensure there is no outdoor source of 
CO in the vicinity such as a car with the 
engine running, heavy traffic, or heavy air 
pollution.
4. Ensure there is no source of hydrogen 
such as batteries being charged (e.g. 
on boats or in Uninterruptable Power 
Supplies (UPS)).
5. Ensure there is not excessive smoke 
or fumes from smoking devices. 
6. Ensure that there are no problems with 
the other RF interconnected Alarms and 
that all Alarms are housecoded correctly.
7. Press the test/hush button to silence 
the alarm.
If the unit continues to sound, it is 
possibly defective and should be replaced 
(see section 8 “Getting the CO Alarm 
Serviced”).

Specications
Physical 
Housing Dimensions
Weight with Batteries
Mounting Fastener
4.7 x 4.1 x 1.6 inches 
(12.0 x 10.4 x 4.1 centimeters)
6.53 ounces (185 grams)
#6 screws and anchors (provided)
Environmental
Operating Temperature
Maximum Humidity
32°F to 104°F  (0°C to 40°C)
15% to 95% non-condensing relative humidity
Sensor Specications
Frequencies
Replacement Batteries
Sensor Indications
Audible Alarm
Humidity Range
433.92 MHz, 
Two Alkaline AAA Batteries  
Low Battery, Supervision, Removal Tamper
85 dBA at 10 feet (3m) minimum
15% to 95% R.H. (Non-Condensing)
Certication
RE115, RE215, RE215T, 
RE315, RE615
FCC, IC, UL2034, CSA 6.19-01
Specications subject to change without notice.
IC NOTICE
This device complies with Industry Canada license-
exempt RSS standard(s). Operation is subject to the 
following two conditions:
(1) This device may not cause interference, and
(2) This device must accept any interference, including 
interference that may cause undesired operation of 
the device.
Le présent appareil est conforme aux cnr d’Industrie 
Canada applicables aux appareils radio exempts de 
licence. L’exploitation est autorisée aux deux conditions 
suivantes:
(1) L’appareil ne doit pas produire de brouillage, et
(2) L’utilisateur de l’appareil doit accepter tout 
brouillage radioélectrique subi, même si le 
brouillage est susceptible d’en compromettre le 
fonctionnement.
IC: 8310A-RE115, 8310A-RE215, 8310A-RE315
WARRANTY
Resolution Products, Inc. will replace non-portable 
products that are defective in their rst ve (5) years 
and all defective portable products in their rst two 
(2) years.
47-0024-00• RevA • 2018-02-01
 Tech Support Line (877) 260-5578
www.ResolutionProducts.com
FCC NOTICE
This device complies with Part 15 of the FCC rules. 
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference that 
may be received, including interference that may 
cause undesired operation.
Changes or modications not expressly approved 
by Resolution Products, Inc. could void the user’s 
authority to operate this equipment.
FCC ID: U5X-RE115, U5X-RE215, U5X-RE315 
TRADEMARKS
INTERLOGIX, HONEYWELL, DSC, AND 2GIG 
ARE TRADEMARKS OWNED BY UNITED 
TECHNOLOGIES ELECTRONIC CONTROLS INC., 
HONEYWELL INTERNATIONAL INC., TYCO SAFETY 
PRODUCTS CANADA LTD, AND NORTEK SECURITY 
& CONTROL LLC, RESPECTIVELY. RESOLUTION 
PRODUCTS, INC. PRODUCTS WILL FUNCTION 
WITH ONE OF EITHER INTERLOGIX (FORMERLY 
GE), HONEYWELL, DSC, OR 2GIG SYSTEMS. 
HOWEVER, NO RESOLUTION PRODUCT IS 
PRODUCED BY, ENDORSED BY, NOR IS OFFICIALLY 
ASSOCIATED WITH INTERLOGIX (FORMERLY 
GE), HONEYWELL, DSC OR 2GIG. RESOLUTION 
RECOMMENDS VERIFYING PROPER ENROLLMENT 
AND OPERATION, PER CONTROL PANEL 
INSTALLATION  INSTRUCTIONS,  AT  INSTALLATION.